ASTROSAT CZTI

Data Quality Report

Orbit 01351

Creation date: 2024-06-27T14:11:22.954069
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G04_002T02_9000000230_01351cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01351cztM0_level2_quad_clean.evt
Size (bytes)671,238,72053,441,280
Size640.1 MB 51.0 MB
Events in quadrant A6,190,997332,353
Events in quadrant B4,953,877352,214
Events in quadrant C4,622,030346,816
Events in quadrant D4,326,818336,026

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219661063
B018196998
C017182932
D016186838

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0742
B0742
C0742
D0742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A35302978.413598%
B3528150.425170%
C3536240.678733%
D3534391.103565%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 3709 3552 1101 1101 29.68% 31.00%
B 3705 3556 391 391 10.55% 11.00%
C 3709 3558 333 333 8.98% 9.36%
D 3707 3561 315 315 8.50% 8.85%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 127 1561632 5251.31 1201 1210 297.1
A 0 51 12849 39.17 1201 1210 297.1
A 4 32 7122 19.9 1201 1210 297.1
B 12 52 79118 254.86 1257 1266 305.5
B 6 53 42282 134.27 1257 1266 305.5
B 15 22 17830 54.22 1257 1266 305.5
C 12 4 94115 292.31 1125 1165 318.0
C 15 241 91285 283.41 1125 1165 318.0
C 14 223 19653 58.14 1125 1165 318.0
D 13 205 48992 145.99 1108 1125 327.9
D 13 252 35437 104.65 1108 1125 327.9
D 13 73 28505 83.51 1108 1125 327.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter